Jig assembly and guide for locating door lock recesses



1952 w. B. ZERN 2,605,791

JIG ASSEMBLY AND GUIDE FOR LOCATING DOOR LOCK RECESSES Filed July 29, 1949 6 Sheets-Sheet 1 Inventor" WARREN B.ZERN

W. B. ZERN Aug. 5, 1 952 JIG ASSEMBLY AND GUIDE FOR LOCATING DOOR LOCK RECESSES Filed July 29, 1949 6 Sheets-Sheet 2 3mm WARREN B.v ZERN Q MM ATTORNEYS w. B. ZERN Aug. 5, 1952 JIG ASSEMBLY AND GUIDE FOR LOCATING DOOR LOCK RECESSES Filed July 29, 1949 6 Sheets-Sheet 3 WARREN a. 25m

My/LAM ATTO RN 5Y3 w. B. ZERN Aug. 5, 1952 JIG ASSEMBLY AND GUIDE FOR LOCATING DOOR LOCK RECESSES Filed July 29. 1949 s Sheets-Sheet 4 N 1; 1 M I. m 5% Q M w W ATTDRN EYS.

6 Sheets-Sheet s W. B. ZERN JIG ASSEMBLY AND GUIDE FOR LOCATING DOOR LOCK RECESSES Aug. 5, 1952 iled July 29. 1949 r T1 T4 I Z r Inventor WARREN B. ZERN I i ATTORNEYS n m w M m w Aug. 5, 1952 w. B. ZERN 2,605,791

JIG ASSEMBLY AND GUIDE FOR LOCATING DOOR LOCK RECESSES I Filed July 29, 1949 6 Sheets-Sheet 6 a *gfi Q l fl; 3v I 9 z \2 .2

F N (D l I g f I V l m ,l (D

mmvrox WARREN B. ZERN ATTORNEYS fiatented Aug. 5, 1952 no ASSEMBLY AND GUIDE FORLOCATING noon LOCK alsoizssnsv Warren B. Zern, Montgomery County,

near Pottstown, P32- Application July 29. 1949, Serial No. 107,428

8 Claims.

I This invention relates to lock jig assemblies generally of the type shown in my Patent 2,355,603 and has for an object the provision of an improved apparatus and means quickly and accurately to locate a double template assembly relative to a door and the door jamb for accurately routing the recesses for the door lock and the complementary part or plate on the jamb.

In the past, the use of double template assemblies has been proposed, but one difficulty has been the clamping of the parts into accurate alignment to insure perfect matching after the nailing or securement of the door jamb in the door frame. If an accessory requires as much time in itsuse as for the work to be done manually, the accessory is of little value to the skilled workman.

In carrying out the present invention in one form thereof, the double template assembly is in its use on the first door accurately positioned for the location of the recess for the lock and the co operating plate. Thereafter, a non-elastic chain, cable, .or the like is secured to the template assembly, pulled taut, and a rod connected to one end thereof; It is then locked or clamped in fixed position with respect to an end-locator assembly secured to the top or head end of the door. Thereafter, the double template assemb-lyis accurately positioned on all subsequent doors by first clamping the end-locating assembly to the end of the door and pulling the template assembly along the door until the chain or cable is taut. The template assembly is then clamped to the door. A clamp carried by the template assembly and end-locatcr arms carried by the end-locating structure cooperate for the support and accurate positioning of the jamb adjacent the door and beneath the template carried in the template assembly. Thus, my present invention represents a substantial improvement in enabling an operator quickly to rout out the door lock recesses and plate recesses in a multiplicityof doors with minimum delay in setting up. the apparatus. Thus, thereis a great saving of time and a reduction in-the cost of framing or preparing the door for ultimate hanging inthe door frame.

Further objects and -advantagesof the invention will'be pointed out in the following description taken in. conjunctionwith the accompanying drawings, in which:

Fig."1is1-an isometric view of a-fractional part of the;door-with the hinge jig assembly in place and the router in position for the routingorcut Fig. 3 is a side elevation looking upwardlytoward Fig. 2; 1 s

Fig. 4 is a bottom plan View of the double template assembly as seenfrom the bottom "orreverse side of Fig. 2;

Fig. 5 is a side elevation looking into Fig.- 2 from the upper end thereof;

Fig. 6 is an end elevation looking into Fig. 2 from the right-hand side; Fig. 'Zis a, sectional View taken on the line l-Tof Fig. 2;

Fig. 8 is a fractional sectional elevation taken on the line 8'-8 of Fig. 2; r Fig.9 is a fractional sectional view taken on the line 9-9 of Fig. 2;

Fig. 10 is a plan view of a drill guide for the hole for a tubular lock; I

Fig. 11 is a bottom plan view of the drill guide; Fig. 12 is a sectional view of the drill guide taken on the line 'l2l2 of Fig. 10 and after positioning thereof in the double template as semblyj i Fig. 13 Sheet 1) is an end.elevation of :the end-locating structure of Fig. 1; Fig. 14. isa. plan viewof the end-locating struc; ture of Fig. 1; j 7 Fig. 15 is a sectional view similar to Fig. 7 with a door and 'a'fjamb clamped in proper position forthe routing of recesses therein; and

Fig. '16'is' a perspective view of amqdification of the depth-control structure shown in Fig.9. Referring to the drawings, the invention in one form hasbeen shown as applied to a door it supported and held in fixed position along one end thereof by any suitableimeans (not shown). The lock jigassembly forming the subject matter ofthe present inventionis illustrated in position for the routing of the recess for. the lock platein the door and for the striker plate. in the ja'mb; a router lfl for standard construction being .illus trated in position on the. double template assemi vbly I2. The 'double template assemblyflZ is 10-; cated lengthwise; of the door in a predetermined position by means'of a cable or chain" 13 fixedly secured at one end to the double template assemblyllz and at the other end secured tolarod i 4 which is clamped in fixed positionas'by'ineans of a screw .l dqto an end-locating assembly 1151 boring The-rod I lay be aiil fim lfd te h ofdoors andalso provides aconvenient handle for pulling .the chain 1 I 3 taut to insure that thetem:

plate assembly 12 will becorrectly positioned on I the restlgofthe doors in, the series. ;Whe the routingoperations,are'to be'perfcr n'ed on he next door of the same size in a series, there :w ll be 1110 needito change-fi e positionpf the rod M as it has now been clamped in its correct position by means of the screw Ma. The end-locating assembly or structure I5 is clamped firmly and snugly against the head end lDa of the door II] as by a knob or handle l6. Extending outwardly from the end-locating structure is a jambsupporting arm 11 and a J'amb-locating arm l8. Jamb l9rests upon'thelower arm l l, while the upper locating arm l8 is disposed within a dado or recess 19a in the end of the jamb l9.

While the disposition of the jamb loca'ting.arm I8 in the dado [9a represents the preferred locating means, the shape of the arm l8 may bemodifled, or the arm as it stands may be utilized in cooperation with the end of thejamb 19 to locate the jamb l9 lengthwise of the door and-in suitable position with respect thereto. The-double template assembly itself is rigidly clamped to the .door l fl bymeans of a clamping .jaw 21 operable by efknob or handle 22, the station'ary.jawpon opposite sides of the door .not, appearing in "Fig. "1.

. Alclamping assembly 23 is secured'to asupporting rod 24 extending 'fro'm'the template'assembly. The; clamping assembly-23 includes'anarm or :j aw, not shown i'nFig. l, which.'prjes'ses the jamb [9 into fixed position with respect to a stationary jaw of the template assembly 12 and preferably includes an arm which simultaneously lifts the jamb l9 against locating surfaces .onlthe lower side of the double template assembly. Thus, it will be seen that in accordance with'theipresent invention the door .3 amb 'is simultaneously located lengthwise of the doo'r'and in'th'at'predetermined relation with a template assembly 'forthe simultaneous or successiverouting o'fa'recess'for the striker plate in thejamb'and for the LlockpIate in-the door. I

As best shown' in Fi'g"s..13 and14,the'en'd-=locat ing structure If: may include a j'aw26""pivotally carried atthe end of the threaded shank F21 to which the .knob H5 is secured. A stationary-arm 28engag'es one 'sidefof the 'doorwhile' the jaw-2B engages the oppo's'iteside ofl'thedoor toiprovide a structure for the clamping operation. The jamb-locating arm I8 is carried byanextension "20 .on the frame. A second Jjamb-locatingarm [8a is provided and,itwi1 l-be observed;it extends outwardly fromthe opposite side of-theiend locatingstructure l5 and is used to 'take'care-of' doors which swing from "the oppositelside 'to'theone illustrated in 3 Fig. '1. This feature of ,the invention will later bedescribed more indetail.

"flhelower'supporting arm 11 is igpivotally'secured to a ledge onthe bracket "29"as byia 'screw 32, Big. 13, the arm ".bein 1 pivotally mounted 3 for rotation from its left hand positionin"Fig."l-to a right-hand. positionv in cooperative relation with thearm'lta. The'bra'cket 29 is s'lidably mounted in a way or groove 30tand clamped therein by a screw 3 l. Thus, the 'slot 29a provides forvertical vadjustment of the lower supporting'arm I! to take 'careofjambs 'of differing thickness.

'ln' general, the'thickness of thelockplat'es-and the striker plates will bedifierent fromth tliikness of the hinges. However, in order that -the router I l may be used with the saine setting "for both "the hinge seatsan'd lock *plates and striker plates, provis'ion is 'made for separate adjustment of the 'l'o'o'a'tor surfaces on the 1 double template assembly 12, for the door and for the 'jambHI. More particularly,:the

depth-control "structure w hi'ch determines the depth 3 of *the recess for' the lock plate of" the door "for the "seats for "the.

cally the angle 36, may be varied relative to the frame to raise and lower the double template assemblyas a wholein control of the depth of the cut of the router for a fixed adjustment thereof.

In one preferred form of the invention, the distance between the crests and the distance between the troughs of the notched frame and angles may be one-sixteenth inch. Thus, each adjustment will'result in the change of depth by one-sixteenth inch. -Of course, the serrations or notches may be but a thirty-second .of an inch between notches if a finer adjustmentis desired.

By providing separate depth control angles'i lfl and '4I ,.Figs. l-4,'each adjustable under the "control ofthe knurled headed screws 42 and, the position of the jamb l9 'relative'to-the'templatejor the striker plate may be'varied as desired. "Thus, variations in thickness 'asbetween the lock plates and striker plates can be taken into account-by the proper adj ustmentof the depth-'control'angles 36-36 and 40-4l. 7

The double template-assembly1-2deconstructed for maximum flexibility in the operations performed therewith as bythe provisions of a-num ber of adjustable features. More'particularlyreferring to Figs. 2-5, it will beseen that the'refis mounted within the frame F a template carrierfl which has secured thereto as by the screws'i it, the template 46 for the lock plate. The template carrier -44 isslidableupon the ways formed in the frame F. The screws in threaded-engagement with the carrier 44, Figs. i-and 8, may be-rotated by the knurled knobs' l-l, secured to the 'screwsto position the carrier "44 and the template '46 in any desired position-as may be required bythe thickness of theparticular door to-which theassembly as a whole is secured.

Similarly, a carrier -48, -slidab1y 'mOunted'upon ways in the frame F, hassecured to it-the'template 48 as by-the clamping screws 50. Itspo'sition'within the frame Fis under the "control'of screws in threaded engagementwith the'carrier 48- and operable by the knurled' heads or 'knobs 5 I. Clamping screws -33 and 34 are provided on' the underside of the assembly-l2 to hold'eachcarrier in *fixedposition, and frictional arms may also bear against the knurled heads of the adjusting knobs 41 and "5| to 'hold them'in fixed position while-screws 33 and 34 are being :tightened'such arms being shown in Figs. -2, 3-and5 and identified by the reference character =52. Preferably, each knurled end or headof each screw is provided with a marking such'as the diametral lines 53,'Figs.3 and 5, sothat an'operatormay count the number of turns or the'number of'quarter turns of each screw, the threads beingcut for a movement of each carrier by a'fixedam'ount 'for each quarter of revolution. Thequarter' revolution calibration is to "be taken :as suggestive,' the pointbeiug that it is desirablethat for each quarter turn the carrier shall be moved,'say, a 'sixtycomprises adjustable angles 35 -'a'nd.':-36,:at least i one being shown in Figs. 1. 2. 1; 5, '6,"-'Z, 8 andi9,

fourth :of an inch. Flor lock .plates @an'di striker plates *of' different sizes, different templates .can be readily'lnserte'd into each .icarrier,*as may be required.

1 Referring :Enow toflii'gs. '16, 7 and T8,:i'it" will fibe seen that the frame F is provided with'idowm- .5 wardly extending arms or projections 54 and 55, the former having extending therethrough the threaded screw 56 to which is attached the clamping knob 22. Retained at the inner end of the screw 56 is the clamping plate 2| which is guided in its movement into and out of the clamping position. by means of rods 51 and 58, both of themappearing in Fig. 4. As already explained, the door extends into the space between the locating surface 55a of projection 55 and the clamping member -2 I. It will be observed that the locating surface 55a of the projection 5 and the cooperating clamping surface of clamping member 2| extend at an angle with respect to the upper template-carrying portion of the frame, this angle being approximately '3 less than a right angle in the case of angle A bounded on one side by surface 55a and approximately 3 more than a right angle inthe case of angle B bounded on one side by the opposed parallel clamping surface of member 2|. -The angular relation between the locating surface 55a, Fig. 6, and the locating surfaces 55 (and.

36. Fig. 2) is to take care of the fact that many doors are provided with angular edges; i. e., an edge which isdisposed or cut at an angle with respect to the face of the door, such angle ordinarily being of the order of 3 from the usual 90 relation of the edge and face of a square edge door. Thus, for an angularly edged door the lower face of the locating angles and 36 will rest against the edge of the door while for a square edged door'th'e template-carrying portion of the frame will be disposedat a 3 5 angle with respect to" the edgeof thedoor.

By reason of the foregoing provisions, the seats routed beneath. each opening in-each template will be of proper depth and relation to the edge of. the door to take into account and to make 'uniform'the location of eachiplate regardless of whether the operation is being carried out on a square edged-door or one with angular edges. Secured to the projection of frame F is a pair of adjustable jamb-supporting arms 59, Figs. 2-5, each provided with a slot'fiil and a locking screw 6|, Fig. 6, the jamb-sufaporting arms 59 cooperating with jamb-supporting armjl'l, Fig. 1, of the end-locating structure temporarily to support the jamb l9 preparatory 'to'the routing. of the seat forfthe striker plate therein. After the jamb has been located on the'jarms I! and 59, a clamp, Fig. 15, rotatably supported on an extension 2 5 of the frame F is operated to clamp the jamb firmly against thelframe extension 55. While any suitable form of clamp may be-util-. ized, I prefera clamp of the type shown in Schwarzer application Serial No. 106,835 filed July 26,1949 and'assigned'to me. n

w The preferred form of clamp illustrated herein, Fig. 15,: forms a part of the subject matter pf said Schwarzer application, Preferably it functions as follows: The clamp" frafnef'jGZ is fixed in position onthe rod-like extension 24"by means of a screw 63fextending through'aflocating collar 64.. By. rotating an operating 'handle65in 'a counterclockwise direction from? an elevated position, a cam surface 56 is brought to' bear against the end of a slidable jaw 61' 1 The operate I application of the lock theretoythe lock jig as-' i semblyas a whole-isreadily removable therefrom.

inglever 65 is pivoted .attBLTto Tafcrankf 6.91,

pivotally supported a t 10, to .thefcla'mp me 52 and carrying a pressure ifootk llfipivote a r-lie opposite end thereof. iiiei-aswnwarajiseteig e t f th p ra n e '65? 'qii jl a inia oun e l c se. ir tio Pre est-1 fi teli'fit elamb-19 195 5 iar th against the locatin'gsurfaces of angles 40 and M. After the elevation of the jamb I 9 against the locating surfaces, the crank 69, of course, comes to standstill. Thereafter the cam surface 66 is effective to move the slidable jaw 61 to the right to press the jamb tightly against the projection 55.

After the routing of the seats for the plates, it is desirable immediately to bore the opening for the tubular lock usually used on doors. This is readily accomplished-with the opening for the tubular lock precisely located by the template for the lock plate in manner which will now be described in connection with Figs. 10-12 The drill guide comprises a cylindrical riser 72 extending upwardly from a plate 13 at an angle which is 3 away from a right angle, this angle being indicated in Fig. 10. Secured to the plate 13is a body portion 15, Figs. 11 and 12, which is made to nest within the opening in the template 46, Fig. 12. In order to hold thedrill guide in place without application of stress to the template 45, there is provided a supporting frame 76, the shape of which is best seen in Fig. 4. Screws 1! and 18 secure the subframe i6 to the template carrier 54. Upon insertion of the drill guide into the plate 45, Fig. 12, the body portion 15 moves through the opening until a pair of locking dogs 19 and may be moved outwardly from slots in the body I5 into locking engagement with thecross members of subframe 16. With the drill guide so locked-in position, the drill 8!, shown in broken lines in Fig. 12, may be lowered through the drill guide and the hole. drilled into the door for the tubular lock of the. door. With the drill guide thus clamped in position,'-it is to be understoodthat the inclined tubular guide-extends at an angle of 93 from the face of the template and, thus, the opening for the tubular lock will extend parallelfto the face of the door and maximum strength for the mounting of thelock within the door will then be provided. f' j" There have now been described the principal operations of the lock jig forming the subject matter of the present invention though it is to be understood that further variations will suggest. themselves to those skilled in the art. For example, an additional feature may include the provision of a marker plate 82, Figs. 3, 4 and 5, which may be inserted into a notched end of the projections 55 of the frame F, Figs. 3 and 7, and there held in position by screws operable by knurled knobs 83; The markerplate 82 is then positioned so that the openings 84 and 85 may be used to inscribe on the doormarks for the keyhole and spindle openings of the mortise type of lock. The openings 86 and 81 correspond to the standard locations for most tubular lock spindles. It. is obvious that further openings can be made in the template for marking spindle locations of special locks thatdo not conform to the morepopular typeof lockin use on doors. I

Thus, thespindletemplate 82 is but a further example of additional uses and advantages oi the present invention. I j

Now that the door has beenprepared for the The clamping assembly i j'released, the jamb removed, ands-the: end-locatorj mechanism 15 re a byihej cl mp 1 l f s r e gtd at:

th lamp n a s m l -Lem r be sase -and if lamb removedg prior to the: marking; of th 1 p ks indleo r the-clogs; if. it i.

termining the distance therebetween for rapid cutting in the-door and in the jamb of recesses for a door lock and a plate, said template assembly including a jamb support extending outwardly of the door, said assembly having separate locating surfaces, one for the door and one for the jamb for selective positioning thereof with respect to each template thereof, said template assembly including a clamp having at least one arm for lifting the jamb against its locating surface and for pressing it into fixed position relative thereto while held in fixed position lengthwise of said door by one of said jamb-locating arms, and separate clampingv means on said assembly'for clamping said door in fixed position relative to its locating surface.

7. The combination of a template assembly comprising a frame having opposed clamping members the clamping surfaces of which are parallel to each other for clamping a member therebetween, a template carrier supported within said frame, a sub-frame secured to said template carrier, a template carried by said carrier, said template having a central opening and a drill guide adapted for insertion within the opening of said template for establishing the direction of the drill comprising a cylindrical riser extending at the same angle as said clamping surfaces, a body portion secured to said riser dimenqsioned to nest within the opening in said template, and interlocking means carried by said drill guide for locking said guide to said subframe in a predetermined fixed position without application of stress to said template for the drilling of an opening parallel to the member clamped between said clamping members.

8. The combination with a template frame, a template supported therein, said template having a central opening and said, template frame having opposed clamping members, the clamping surfaces of which are parallel and with respect to the template face one of said surfaces being disposed at an angle somewhat greater than 90 and the opposed surface being disposed at an angle somewhat less than 90, of a drill guide having a tubular riser adapted for insertion in the opening of said template for establishing the direction of the drill, said tubular riser extending at an angle with respect to said template face and parallel to said clamping surfaces, and interlocking members carried by said drill guide for releasably locking said drill guide to said template frame in a predetermined fixed position for the drilling of an opening in a merriber clamped between said clamping members and parallel thereto.

WARREN B.

REFERENCES CKTED The following references are of record in the file of this patent:

UNITED STATES PATENTS Zern Aug. 8, 

